Song Hye-kyo (Korean: 송혜교; born November 22, 1981) is a South Korean actress. She gained international popularity through her leading roles in television dramas Autumn in My Heart (2000), All In (2003), Full House (2004), That Winter, the Wind Blows (2013), Descendants of the Sun (2016), and Encounter (2018). Her film work includes Hwang Jin Yi (2007), The Grandmaster (2013), My Brilliant Life (2014), and The Queens (2015).
In 2017, Song Hye-kyo ranked 7th in Forbes magazine's Korea Power Celebrity list, and 6th in 2018. She is referred to as one of "The Troika" along with Kim Tae-hee and Jun Ji-hyun, collectively known by the acronym "Tae-Hye-Ji".
She is also known as 송혜교 and Song Hye-gyo.